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I'm glad you have a circumvention which appears to be working for you. I'm not sure I can help improve it.
The OpenBSD pf.conf(5) man page from May 2007 - pre-fork - mentioned that the external address field must be routable. With that limited knowledge, I'm only able to conjecture that you cannot use an alias address. Possibly, you may be able to revise your network block so that the NIC's base address can be used for routing and for NAT. --- I don't know what an "almost /28" is. A /28 is a block of 16 IP addresses, with 2 reserved and 14 available for device addressing. Last edited by jggimi; 25th November 2015 at 05:18 PM. Reason: typo |
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XX.YY.ZZ.210 - .222 I don't own .208 or .209. I own .210-.222. And the broadcast domain is technically a /24, not a /28. That's why I said it's almost a /28. My gut tells me they're protecting themselves for a future where maybe they start doing proper routing, and they assume the routed interface on the customer's CPE would be the .209 (in my case). But that's not what I have right now. In other words: they're idiots. |
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Ah, well then. I've never used an ISP that leased a subset of addresses within a CIDR -- in your case, what appears to be a 13 address range within a /24.
I wonder what isolation method is deployed between customers on the same subnet. One would hope they have one. But perhaps all they're doing is blocking broadcasts. Perhaps. ![]() It's my guess that this gives them addressing flexibility as customers come and go. IPv4 is fully committed. Do they also offer IPv6? If so, addressing schemas may be normal -- if anything in IPv6 can be described with that word. Last edited by jggimi; 25th November 2015 at 07:56 PM. Reason: typos, clarity |
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